Assignment: The Digestive System

Utilizing knowledge from your learning and assigned readings, respond to the following questions:

1. Identify and describe the six major processes involved in gastrointestinal activity.

2. What role do hormones play in hunger and satiety?

3. Outline the usual pathway for digestion and absorption of triglycerides (fats).

4. Explain the role of the hormones cholecystokinin and secretin in regulating the release of bile and pancreatic juices.

5. Why is it necessary for the stomach contents to be so acidic? How does the stomach protect itself from digestion?

6. Identify three ways the small intestine is modified to increase the surface area for digestion and absorption.

7. Trace and discuss the complete movement of a bolus of food entering and exiting the human via the digestive system.

Define the meaning of these terms:

1. Gastric glands
2. Brunner's gland
3. Ductal cells.